ISBN 102181356 was input with 9 digits (one digit too few).
The ISBN 102181356 that you entered has got 9 digits, i.e. one digit is missing to make a valid ISBN. You can find information on the format of an ISBN on the home page of this site. This site has found the following 9 numerically correct ISBN out of which the ISBN that you input coule have resulted by a single error (dropping one digit). You can now check out these suggestions in the databases of the following booksellers' sites: amazon.co.uk (UK), amazon.com (USA) and amazon.de (Germany). Additional sites to search by ISBN (in this case, in catalogs of libraries) are e.g. the Library of Congress (USA) or the search gateway of the Deutsche Bibliothek. To the home page
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ISBN prefix group: English language
ISBNas­su­med er­rorCatalogs for checking
1-002-18135-6second digit was drop­ped.
or
third digit was drop­ped.		 amazon.co.uk amazon.com amazon.de
1-02-158135-6fifth digit was drop­ped. amazon.co.uk amazon.com amazon.de
1-02-180135-6sixth digit was drop­ped. amazon.co.uk amazon.com amazon.de
1-02-181351-6ninth digit was drop­ped. amazon.co.uk amazon.com amazon.de
1-02-181356-7tenth digit was drop­ped. amazon.co.uk amazon.com amazon.de
1-02-181365-6eighth digit was drop­ped. amazon.co.uk amazon.com amazon.de
1-02-181835-6seven­th digit was drop­ped. amazon.co.uk amazon.com amazon.de
1-02-618135-6fourth digit was drop­ped. amazon.co.uk amazon.com amazon.de

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